whiteboard 700 x 500.1. Computer interface: The interface type refers to the way in which the electronic whiteboard and the computer system are connected. Common interface types are parallel port (also known as IEEE 1284) and serial port (also known as RS-232 interface) and USB interface. Technology determines the core quality of an electronic whiteboard, but a single technology does not represent the entire product. 2, stability: stability refers to the stability of the entire product (including hardware), with the help of market experience and the experience of old users, easy to judge product stability; 3, sensitivity: draw a line on the whiteboard, if the line is continuous If the sex is not strong, it means that the sensitivity is not high. 4. Accuracy: Accuracy refers to the degree of coincidence between the mouse cursor tip and the stylus tip after calibration; 5. Resolution: Resolution refers to the number of points on each line ( Or the number of pixels). Usually the number of points is represented along the horizontal and vertical edges of a screen or monitor. 6. Output mode: The electronic whiteboard can scan and print the content written on the whiteboard in a certain way. The way of printing output is generally thermal, inkjet and ribbon; 7. Number of panels: Under normal circumstances, the electronic whiteboard will be equipped with 1-4 panels, and the number of panels is more than 2, which can facilitate screen circulation; 8. Panel Size: refers to the actual size of the electronic whiteboard, the unit is mm, usually refers to the length ?? width of the electronic whiteboard; 9, effective reading size: refers to the effective size of the electronic whiteboard can be written, can be arbitrarily written in this area And copy output, its size is generally smaller than the actual panel size; 10, resolution: resolution refers to the number of points (or pixels) on each line. Usually the number of points is represented along the horizontal and vertical edges of a screen or monitor. 11. Continuous copy number: Continuous copy means that the same manuscript does not need to be set multiple times, and the electronic whiteboard can complete the copy of the largest one at a time. Quantity, representing the maximum capacity for continuous replication of this product.